Flusher type spray nozzle



Dec. 17, 1935. T. A. LoUGr-LIN t 2,024,936

FLUSHER TYPE SPRAY NOZZLE Filed Jan, 18, 1953 Patented Dec. 17, 1935UNITED STATES PATENT OFFICE 2 Claims.

My present invention relates to spray nozzles, and has for its objectthe provision of an extremely simple and highly efficient spray nozzleof the flusher type.

While the invention is intended for general use in vspraying all kindsof fluids, it is especially Well adapted for spraying fluids containingsolids or other foreign matter that would tend to clog the dischargeorifice and thus reduce the eciency of the nozzle.

The invention is also especially'well adapted for spraying oil on coalto allay dust, and in which use, it will break up the oil stream into aline spray at low uid pressure.

To the above end, generally stated, the invention consists of the noveldevices and combinations of devices hereinafter described and defined inthe claims.

In the accompanying drawing, which illustrates the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawing:

Fig. 1 is a View partly in side elevation and partly in longitudinalcentral section;

Fig. 2 is a view principally in section taken on the line 2-2 of Fig. 1;

Fig. `3 is a front elevation of the improved nozzle;

Fig. 4 is a transverse section taken on the line 4-4 of Fig. 2; and

Fig. 5 is-a perspective view of one of the sections of the nozzlemember.

The improved spray nozzle includes an annular body member l, the frontend portion of which is reduced in diameter to form an annular neck 8that is axially aligned therewith. A passage 9 extends axially throughthe body member 1 and the neck 8. Formed in the neck 8 is an externalannular seat I0 that is channel-shaped in crosssection. Extendingtransversely through the seat I0 is a key II in the form of a pin, theend portions of which are fitted inl a bore in the body member 'I andthereby rigidly hold said key in place.

As shown, the improved spray nozzle is secured to the delivery end of afixed pipe I2 that leads from a suitable source of fluid supply, notshown. This pipe I2 extends into the passage 9, from the inner end ofthe body member l, and is secured by screw-threads to said member.

The improved spray nozzle further includes a sectional nozzle member I3in the form of a cylindrical shell having a conical outer end portionI4. The two sections of the nozzle member I3 are semi-cylindrical incross-section and the neck 8 extends into the shell from the inner endthereof. It will be` noted that there is clearance between the neck 8and internal Walls of the nozzle member I3 to permit the edges of thesides of the sections of said member to contact and to 5 be tightlypressed together, as will hereinafter appear.

Formed with the inner ends of the sections of the nozzle member I3 is anannular ange I5 that projects into the seat I0 and detachably interlocksthe nozzle member I3 with the neck 8, and thereby holds said memberagainst removal from the neck 8 and hence the body member 1, except byradial movements. It Will be noted that the free edge of the flange I5is spaced from the bottom of the seat Il) so as not to interfere withthe pressing of the sections of the nozzle member I3 together. It willalso be noted that there is clearance between the sides of the seat I0and the sides of the flange I5 to permit slight axial movement of thenozzle member I 3 with respect to the body member l.

A pair of notches I6 are formed one in one of the ends of each sectionof the flange I5 and diametrically arranged to receive the key II andthereby prevent rotation of the nozzle member I3 with respect to thebody member l. In assembling the sections of the nozzle I3 around theneck 8, either notch I may be brought into registration with the key II.

In the apex of the conical portion I4 of the nozzle member I3 is adischarge orifice I1 in the form of a narrow slot. This orifice Il, asshown, is formed entirely in one of the sections ofthe nozzle member I3and Will produce a Very fine spray. If a Wider orice I1 is required, fora heavy spray, the same may be formed in both of the sections of thenozzle member I3.

The two sections of the nozzle member I3 are held in assembled relationwith the fla-nge I5 in the seat I0 by a clamping member or sleeve I8,the base or inner end portion of which surrounds the outer end portionof the body member I and has screw-threaded engagement therewith foraxial adjustment thereon. The outer end portion of the clamping sleeveI8 is in the form of a truncated cone I9 that cages the nozzle memberI3. The opening in the outer end portion'of the clamping sleeve I8 isindicated by the numeral 20.

The apex of the nozzle member I3, in which the orice I1 is formed,normally projects through the opening 20 and at which time said orice isentirely outwardly of said member. The internal surface of the conicalmember I9 normally engages the external surface of the conical 55 memberI4 and which surfaces have substantially the same pitch.

When the clamping sleeve I8 is screwed onto the body member 1, a camaction between the conical members I3 and I9 takes place which pressesthe nozzle member I3 axially rearward into a position in which the angeI5 engages the body member 1 as a base of resistance and prevents thenozzle member I3 from being moved rearwardly with the clamping sleeveI8. This same cam action also clamps the two sections of said nozzlemember together.

When the two sections of the nozzle member I3 are pressed radiallytoward each other, by the clamping sleeve I6, the edges of their sidescontact and form closed joints therebetween. The contacting surfaces ofthe conical members I4 and I9 also form a tight joint which preventsleakage of the fluid outwardly of the nozzle member I3.

To flush the nozzle, it is only necessary to unscrew the clamping sleeveI8 to release the nozzle member I3 to allow the sections thereof to beseparated radially by the pressure of the fluid stream passingtherethrough. As the sections of the nozzle member i3 are opened, allsediment or foreign matter collected in said member will be carried outof the nozzle with the fluid stream.

The interlocking engagement between the neck 8 and nozzle member i3, towit: the flange i 5 and seat I9, holds said member against axialmovement with the fluid stream. Obviously, if nozzle member VI3 were notheld against axial movement from'the body member l, at 'the time theclamping sleeve I8 is unscrewed, the pressure of the iluid stream wouldcause the nozzle member I3 to follow the clamping sleeve I3 and therebyprevent the sections of said nozzle member I3 from opening.

The object of the key Ii is to prevent turning movement; of the nozzlemember I3 about its axis with respect to the body member 'i during thescrewing and unscrewing of the clamping sleeve I8 and the flushing ofthe nozzle. By thus holding the nozzle member I3 against rotation, theorifice I'I always remains in a definite and predetermined positionsogthat the spray therefrom will always be in the same plane after eachflushing of the nozzle.

From the above description, it is evident that to flush the nozzle, itis only necessary to unscrew the clamping sleeve I8 suificiently topermit the sections of the nozzle member I3 to open. The

thereafter, the clamping sleeve I8 is again screwed onto the body member'I which auto- Y matically clamps the sections of the nozzle member I3together.

From the above description, it is evident that the flushing of thenozzle takes place without interfering with the ow of uid to the nozzle,Without the use of a tool, and without changing the adjustmentorfposition of the nozzle and Yits discharge orioe I'I. Y

The two sections of the nozzle member I3 are duplicates and each thereofis pressed or stamped, preferably from sheet metal, and the internaledges thereof at the orice Il are relatively sharp and divide the oil atthe spray. Also the narrow orifice I'I and the relatively thick wallsthereof will assist in cutting the oil and producing a finely dividedspray.

What I claim is:

l. In a device of the class described, a body member having a neck and afluid passage extending through said member and neck, said neck havingan annular seat, a nozzle member comprising a shell made up ofvindividual semi-cylindrical sections surrounding the neck and having ontheir inner ends internal flanges extending into the seat for holdingthe nozzle memberV against axial movement away from the body member butpermitting its sections to separate radially, said nozzle member havinga conical outer end portion and a discharge orifice in said end, and aclamping sleeve adjustable on the body member, surrounding the nozzlemember, normally engaging the conical end thereof and holding thesections of the nozzle member pressed together, said clamping sleevebeing operative to release said sections by an axial movement therefromand permit the same to separate radially.

2. In a device of the class described, a body member -naving a iluidpassage, a nozzle member having a dischargeorioe, said member beingcompletely longitudinally divided through its discharge orice,interlocking means connecting the sections of the nozzle member to thebody member and holding the same against axial movement away from saidbody member but permitting lateral separation of said sections, and aclamping member applied to the body member and normally holding thesections of the nozzle member pressed together, said clamping memberbeing operable to release the sections of the nozzle member and permitcomplete lateral separation thereof. v

THOMAS A. LOUGHLIN.

